"There is potential for embedded thunderstorms within the rain. These areas could produce torrential rainfall, with rainfall rates approaching 2 inches in less than an hour," the National Weather Service said.

A few areas could see 3 to 5 inches before the rain ends late Wednesday, the weather service said.

There is a low probability of a brief tornado, the weather service said, but added it is not the same kind of weather system that brought an EF2 tornado to Revere last month.